I absolutely opinion that Frontier will never, not, no way, fold or cease ops, etc. No way
Will another investment group get them, via purchase, merger, take-over, whatever ?
Will Pilot pay be resolved and brought up to current Airbus pay across the industry ?
Will upgrades slow (or quicken) ?
Will pilot QOL / schedules / etc improve or get worse?
those, for me, are the unknowns.
Fold/cease ops/etc ? nope